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In what is perhaps best described as a meeting of powerhouses, Mark Zuckerberg, chief executive officer of Facebook Inc., was photographed in recent hours greeting Lee Don Joo, president of sales and marketing of the mobile communications division at Samsung Electronics Co.

The meeting took place at Samsung's Seocho office building in Seoul, South Korea.

Although initial speculation suggested that Facebook and Samsung are teaming up for a mobile device that could give Apple and other leading mobile hardware makers something to be nervous about, we're told Zuckerberg is primarily interested in new ways of boosting advertising sales from mobile devices.

Behind closed doors, the executives from both companies sat down to discuss a variety of "potential partnerships."

Facebook doesn’t have any comment on Zuckerberg’s trip, said Seikyu Hong, who represents the company in Seoul.

It goes without saying that we are presently awash with more questions than answers. But it shouldn't come as a surprise that Facebook and Samsung are communicating. Facebook, after all, is the world’s most popular social-networking site and wants users to spend more time engaged with Facebook on mobile devices. And Samsung is the world’s largest manufacturer of smartphones. Sounds like a match made in mobile heaven.